This topic is in the 'Number Theory and Fractions' section. This is a really cool section because it's all about patterns with numbers and connections between different math concepts. You'll learn about rules for divisibility, prime numbers, fractions, and the connection between fractions and decimals. So much math builds on the tutorials in this section, so don't be surprised if you see these ideas pop up a lot!
This topic, Factors and Prime Factorization, is a part of Number Theory and Fractions.